Film-roll support for cameras



' I N V EN TOR. Mr qm Aug. 12 1924,

J. A. ROBERTSON ET AL FILM ROLL SUPPORT FOR CAMERAS Filed sept. e, '1922 Patented Aug. 12, 1924. y

UNITED STATES 1,504,971 PATENT, OFFICE.

JOHN A. ROBERTSON AND ROBERT KROEDEL, ROCHESTER, NEW YORK, ASSIGNORS TO EASTMAN KODAK COMPANY, OF ROCHESTER, NEW YORK, A CORPORATION OIF NEW YORK.

FILM-ROLL SUPPORT FOR CAMERAS.

Application led September 8, 1922. Serial No. 586,987.

To all 'whom t mwy cof/wem:

'Be it known that we, JOHN A. ROBERT- soN' and ROBERT KROEDEL, citizens of the United States, residing at Rochester, in the county of Monroe, State of New York, have invented new and 'useful Improvements in Film-Roll Supports for Cameras, of which the following is a specification.

Our present inventionv relates to photography and -more particularly to photographic cameras or film roll holders therefor and it has for its Object to provide such cameras or roll holders with simple, veiicient and convenient spool or film support that can be readily manipulated to insert or remove the, 'film but which are securely locked in operative or supporting position when the camera is closed and the spools lare in use. To these and other ends the invention consists in certain improvements and combination of arts all as will be hereinafter more fully escribed, the novel features being pointed out in the claims at the end of the specification.

ln the drawings:

Figure 1 is a rear view of a film camera with back removed and provided with film roll support constructed in Iaccordance with and illustrating one embodiment of. our invention.v

y Figure@ is a section-alview through the camera in the plane of the inner face of one of the side walls.

Figure 3 is an enlarged transverse secils'ion paigzly broken .away on the line 3-3 of imilar reference numerals throughout the several views indicate the same parts.

We have illustrated our invention in its present embodimentin connection with a roll holding pocket ,hand camera of a familiar type comprising ya body 1 and aV removable back 2 cooperating with the body on a. medi-an line of the camera in connectionv v with the provisioniof light sealing-devices 3. Supported within the body by its front wall only so as to be spaced at allother points from the walls of the shell or casing is a frame 4 constituting the bellows chamber torv housing the bellows 5 and lens board 6 and also extending rearwardly to define the exposure opening 7 of the camera in the focal plane thereof. The top and bottom walls of the frame 1 5T@ in conjunction with the corresponding walls of the body andv back form iilm chambers 8 containing the usual nlm spools 9. chambers become accessible for the insertion and removal of these spools by removing the back 2 and one'of the spools is madethe winding spool through the provision of the usual winding key 10 having the usual axial movement into and out of interlocking engagement with the spool.

Otherwise than this the two spools are supported upon dead centers 11 also having an endwise movement with reference to the spool for engagementand disengagement therewith and in the practice of our invention we mount these` dead centers or trunnion bearings in an improved manner, the centers for the corresponding ends of both spools being formed on a single element. Such element consists of a thin spring metal or similar plate 12' secured at points removed from its ends to the side of the frame 1 as by rivets 13. rThe ends are bifurcated at 14 to form two arms 15 and 16.l The arm 15 carries the center 11 and is laterally iiexible to permit such center to be moved by the iin ers into and out of engagement with the spool 9 while the arm'l is riveted at 17 to provide a fixed bearing su port for the guide roll 18 over which the m from or to the spool is drawn in proper relationship to the exposure opening 7.

The space between theinner,` frame 4 and the side walls of the camera shell gives room for the lateral play of the arms 15 and while it is preferable that the tension on the arms be so set as to tend to carry the centers 11 into the spool ends they are normally 1noperative to insure a rm bearingfor the spool, particularly when the latter 1s under strain, when the back 2 is removed at which time the vspools are easily inserted and removed, usually by manipulation of the spool itself without touching the iingers directly to the arms 15. We make arrangements however, whereby the application of the back 2 to the camera insures the proper firm engagement of the spool centers with the spool to which end there is formed on each arm 15 a cam portion 19 constituted, in the pres- .ent instance, by an ear or extension having the cross sectional form shown in Fio'ure 3. The backQ., in connection with the ligtht seal 3 is usually fitted with an inner spaced flange 2O and we utilize this fiange to engage the cam ear 19 when the back is applied to the The body and to force it inwardly as shown in`v Figure v3 so that the arm 15 and its center 11 are carried in tofirm and definite engage. ment with the spool and maintained there whilel the camera is closed and the s ools. are in operation orready for use. The inner edges o the flanges are preferably beveled as shownat 21 to aid this action. When the back is removed again the control over the spool su ports is automatically released.

The end' riction of the arms 15 may be utilized to retard the rotation of the spools `and prevent over-running but we'have s own additional s ring devices 22 bearin on the periphery o the spool flanges for t 's purpose.

We claim as our invention:

1. In a camera, the combination with a camera body com rising a shell and an inner frame spa from the'walls Tof the shell, of a bifurcated strip of resilient'material mounted on the side of the frame and `film supported on the lilm spool center.

providin two arms, one of which is later@ ally flexible and fitted with a film spool lcentersand the other of which furnishes` a fixed bearing support for a rguide roll forA 2. In a camera, the combination with a camera body anda disfplllzllpeable back cooperatin therewith, ofA spool supports -`within t e body having normally inoperative winding positions but held in .operative positionsby the back.

3. In a camera, the combination with a camera body and a displaceable back 'cooperating therewith, of resilient film spool supportswithin the body having normally inoperative film-winding positions but. actuated to operative positions by the application Qf the back. 1

4. In a camera,-the combination with a f camera body and a displaceable back cooperating therewith, of resilient film spool vsupporting arms within thejbody having mally ino of endwise engagement with a film s a displaceable back for the bod an means members adapted to engage and to actuate' the supportin arms to operative positions when the bac is applied to the body.-

5. In a camera, the combination with a inoperative winding positions, said arms and the backs4 being 'pro-V camera body and displaceableback cooperating therewith, of resilient film spool supporting arms within the bod tive film win 'ng ositions and rovi ed with cam portions an flanges on t e back adapted to cooperate with the cam portions to actuate the arms to operative sitions.

6. n a camera, the combination with ya camera body and 'a dis laceable back cooperating therewith, of lm` spool supporting arms within the body having normally inoperative film windi positions'and cam mechanism for automatically actuating the arms tol operative sition when the back isa liedtothebody.

7. n oamlra, the f(inJmbinatilon with a camera y avingA m spoo sup rts therein adapted to be moved into andhu therein for automatically locking the suprts a inst disengagement when the' back 1s apphed to the body.

therein adapted to be moved into an out of endwise enagement with ailm spool, of a .d isplacea le back fox'- the body, the backand film s pool supports being pro- 'vided with yieldingly cooperating cam devices operating to maintain the spool su ports in engagement with a spool when t e back is in place on the body.

JOHN- A. ROBERTSON. ROBERT KROEDEL..

having norn a camera, the combination with a camera body having'f film spool supiorts 

